<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<meta name="viewport" content="width=device-width，initial-scale=1">
		<link rel="stylesheet" href="css/css/bootstrap.min.css" />
	</head>
	<body class="container">
		<div class="dropright">
			
		<div class="btn-group-vertical">
			<button type="button" class="btn-primary">图书</button>
			<button type="button" class="btn-primary">家居</button>
			<button type="button" class="btn-secondary">文具</button>
			<button type="button" class="btn-secondary">服饰</button>
			<div class="dropright">
				<button type="button" class="btn-info" data-toggle="dropdown">食品</button>
				<div class="dropright-menu">
					<div class="dropright-menu">
						<button type="button" class="dropright-item">休闲食品</button>
						<button type="button" class="dropright-item">生鲜食品</button>
						<div class="dropright-menu">
							<button type="button"class="btn btn-primary dropdown-toggle" data-toggle="dropdown">Web前端开发</button>
	
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						</div>
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	</body>
</html>
